CN114562517A - Bearing retainer and shield constructs owner bearing - Google Patents
Bearing retainer and shield constructs owner bearing Download PDFInfo
- Publication number
- CN114562517A CN114562517A CN202210239538.2A CN202210239538A CN114562517A CN 114562517 A CN114562517 A CN 114562517A CN 202210239538 A CN202210239538 A CN 202210239538A CN 114562517 A CN114562517 A CN 114562517A
- Authority
- CN
- China
- Prior art keywords
- bearing
- retainer
- limiting block
- cage
- stopper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000013013 elastic material Substances 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims description 16
- 229920000642 polymer Polymers 0.000 claims description 8
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 4
- 230000005641 tunneling Effects 0.000 abstract description 15
- 229910045601 alloy Inorganic materials 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000004677 Nylon Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 229910052755 nonmetal Inorganic materials 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
- F16C33/4664—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages with more than three parts, e.g. two end rings connected by individual stays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/56—Selection of substances
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/10—Alloys based on copper
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to the technical field of shield tunneling machines, and aims to provide a bearing retainer and a shield tunneling machine main bearing, so as to solve the technical problems that the bearing retainer of the shield tunneling machine main bearing in the prior art is low in overall wear resistance and rigidity and tensile resistance. The shield machine main bearing comprises an inner ring, an outer ring, a roller and a bearing retainer, wherein the bearing retainer comprises a plurality of retainer sections which are circumferentially arranged, pockets are arranged on the retainer sections, a limiting block is arranged between every two adjacent retainer sections, the limiting block and the retainer sections are matched in a sleeved mode along the circumferential direction of the bearing retainer, a slot is formed in one of the limiting block and the retainer sections which are matched in a sleeved mode, a limiting part is arranged on the other of the limiting block and the retainer sections, the limiting part and the slot are in clearance fit, so that the limiting block and the retainer sections which are mutually sleeved in a sleeved mode can move relative to each other in the circumferential direction of the bearing retainer, and the limiting block is provided with an isolating part located between every two adjacent retainer sections; the limiting block is made of flexible materials or elastic materials.
Description
Technical Field
The invention relates to the technical field of shield tunneling machines, in particular to a connection mode of a bearing retainer of a shield tunneling machine.
Background
The shield machine is called as a shield tunnel tunneling machine, and is engineering mechanical equipment used in a large tunnel tunneling construction link. The shield machine has the functions of digging and cutting rock soil, conveying muck, splicing and building tunnels, automatically correcting deviation and the like. As the shield machine has larger volume and worse working environment, the shield machine has extremely high requirements on the reliability of each component in the shield machine.
The main bearing is one of key structures of the shield tunneling machine and plays an important role in rotating and supporting a cutter head of the shield tunneling machine. The main bearing is connected with the tunneling cutter head to bear huge axial load, radial load and overturning load, and the reliability of the main bearing directly depends on whether the shield tunneling machine can stably run or not. The bearing retainer is used in a main bearing of the shield machine to arrange the bearing rollers at intervals, and the bearing retainer can be used as an internal assembly of the bearing to effectively prevent the contact collision and dislocation between the bearing rollers, so that the rollers are uniformly distributed in the main bearing and reliably run. The existing shield machine bearing retainer is generally divided into an integral structure and a sectional structure. The manufacturing process of the segmented cage is mature, but severe collision and abrasion conditions exist between the segmented cages when the main bearing works due to the acting force of the rollers, and the operation reliability of the bearing is seriously influenced. The integral type retainer can effectively avoid the collision problem of the sectional type retainer, but the main bearing of the shield machine is a large-sized bearing, the size of the used bearing retainer is larger, the integral type retainer with the large diameter size is difficult to process and overhigh in production cost, and the rigidity of the integral type retainer with the large diameter size cannot be effectively ensured. Therefore, the main bearing of the shield machine mainly adopts the sectional type retainer, and how to effectively reduce the collision acting force between the sections of the sectional type retainer becomes the key for ensuring the connection of the main bearing and the stable operation of the shield machine.
The invention patent with application publication number CN105485172A discloses a retainer of a main shaft bearing of a shield machine, which is composed of a main thrust raceway retainer, an auxiliary thrust raceway retainer, a radial raceway retainer and other retainers with various sectional structures and is used for being matched and installed with an inner assembly of a main bearing. However, the split type retainer has the condition of collision and abrasion when the main bearing works, and is not beneficial to the connection and use of the bearing retainer.
The utility model patent of the utility model publication No. CN206419351U discloses a novel direction segmentation holder, and the circumference of holder is formed by the concatenation of multistage segmentation holder main part, and the holder body surface is inlayed and is welded wear-resisting alloy block structure, and the welding external diameter alloy piece is inlayed to the external diameter surface, and welding terminal surface alloy piece is inlayed to upper and lower terminal surface. Through the inlay welding setting of alloy piece, guarantee that the segmentation holder can be in the same place by the monolithic phase. However, the alloy blocks are embedded on the surface of the guide segmented retainer, the retainer may be damaged or broken by the alloy blocks when the alloy blocks collide or run and collide among the retainer segments, and the retainer segment and the alloy blocks have different rigidities, so that the rigidity of the integral structure of the retainer is reduced and the wear resistance of the retainer is greatly reduced after the alloy blocks and the retainer segment are connected.
Disclosure of Invention
The invention aims to provide a bearing retainer to solve the technical problem that the bearing retainer of a main bearing of a shield machine in the prior art is low in overall wear resistance and rigidity and tensile resistance. In addition, the invention also aims to provide a main bearing of the shield tunneling machine to solve the problems.
In order to achieve the purpose, the technical scheme of the bearing retainer provided by the invention is as follows:
a bearing retainer comprises a plurality of retainer segments which are circumferentially arranged, wherein pocket holes for mounting bearing rollers are formed in the retainer segments, a limiting block is arranged between every two adjacent retainer segments, the limiting block is matched with the retainer segments adjacent to the limiting block in a sleeved mode along the circumferential direction of the bearing retainer, a slot is formed in one of the limiting block and the retainer segments which are mutually sleeved in a sleeved mode, a limiting part used for being inserted into the slot along the circumferential direction of the bearing retainer is arranged on the other one of the limiting block and the retainer segments, the limiting part is in clearance fit with the slot in a movable mode so that the limiting block and the retainer segments which are mutually sleeved in a movable mode in the circumferential direction of the bearing retainer, and the limiting block is provided with an isolating part which is arranged between every two adjacent retainer segments and used for isolating the adjacent retainer segments; the limiting block is made of flexible materials or elastic materials.
Has the beneficial effects that: the retainer segments are mutually constrained into a whole by the limiting block, the material of the retainer segments is made of flexible material or elastic material, the limiting block can provide flexibility or elastic buffering when being extruded by the retainer segments, direct contact collision among the retainer segments is avoided, meanwhile, extrusion force or pulling force is effectively counteracted, the limiting block and the retainer segments which are mutually inserted and sleeved can relatively move in the circumferential direction of the bearing retainer through clearance movable fit, and therefore the bearing retainer can be in a self-adaptive moving state when the bearing is operated. Compared with the integral bearing retainer with high cost and low rigidity and the sectional bearing retainer with lower wear resistance and poor anti-collision effect in the prior art, the bearing retainer provided by the invention can effectively resist tension and collision without influencing the running state of the bearing, and the connection and the disassembly of the retainer and the limiting block which are connected in a matched manner through the plug bush are very convenient, so that the cost is effectively reduced.
Preferably, the limiting block is made of nonmetal high polymer.
Preferably, the slot is arranged on the limiting block, and the slot openings corresponding to the two adjacent retainer sections of the limiting block are opposite; the isolation part is arranged between the two slots with the openings opposite to each other on the limiting block. The slots are formed in the two ends of the limiting block, so that the two adjacent retainer sections can be conveniently installed in a sleeved mode, the isolating part can separate the two adjacent retainer sections, collision is prevented, connection is convenient, and the structure is ingenious.
Preferably, the cross-sectional area of the limiting block is larger than that of the retainer segment. The sectional area of the limiting block is larger than that of the retainer section, so that the limiting block can circumferentially coat the retainer section, and the anti-collision and separation effects of the limiting block are better.
Preferably, the distance H between the hole wall of the pocket at the tail end of the retainer section close to the limiting block and the end face of the corresponding end of the retainer section is greater than the maximum depth H of the slot. Prevent that the bearing roller in the pocket from taking place the contact with the stopper.
Preferably, the end faces of the two sides of the retainer section are respectively provided with a friction reducing block, each friction reducing block is provided with a supporting face used for contacting with the inner ring raceway surface and the outer ring raceway surface of the bearing, and the height of the supporting face is greater than that of the limiting block which is higher than the end face of the retainer section. The friction reducing block prevents the axial side face of the limiting block from contacting with the inner ring or the outer ring of the bearing, and reduces the abrasion of the limiting block.
Preferably, the friction reducing blocks on the end surfaces of the two sides of each retainer section are arranged at least two positions along the circumferential direction. At least two friction reducing blocks on the end surfaces of two sides enable the retainer segment to be arranged between the inner ring and the outer ring of the bearing and then to be supported and balanced, so that the whole body is more stable.
Preferably, the friction reducing blocks on the two side end faces of the retainer segment are symmetrically arranged in the axial direction of the retainer segment. The friction reducing blocks symmetrically arranged on the axial direction of the retainer section enable the axial two end faces of the retainer section to be stressed the same, and stability of the retainer section after connection arrangement is improved.
Preferably, the friction reducing block is made of a copper alloy material. The copper alloy material has high wear resistance and long service life.
The invention provides a shield machine main bearing technical scheme, which comprises the following steps:
a shield machine main bearing comprises an inner ring, an outer ring, a bearing roller and a bearing retainer for being assembled and fixed with the bearing roller, wherein the bearing retainer comprises a plurality of retainer sections which are circumferentially arranged, pockets for installing the bearing roller are arranged on the retainer sections, a limiting block is arranged between the adjacent retainer sections, the limiting block is matched with the retainer sections adjacent to the limiting block along the circumferential insertion sleeve of the bearing retainer, one of the limiting block and the retainer sections which are mutually inserted and matched is provided with a slot, the other one of the limiting block and the retainer sections is provided with a limiting part for being inserted into the slot along the circumferential direction of the bearing retainer, the limiting part is in clearance fit with the slot, so that the limiting block and the retainer sections which are mutually inserted and matched can move relatively in the circumferential direction of the bearing retainer, and the limiting block is provided with an isolating part which is arranged between the adjacent retainer sections to separate the adjacent retainer sections; the limiting block is made of flexible materials or elastic materials.
Has the advantages that: the retainer segments are mutually constrained into a whole by the limiting block, the material of the retainer segments is made of flexible material or elastic material, the limiting block can provide flexibility or elastic buffering when being extruded by the retainer segments, direct contact collision among the retainer segments is avoided, meanwhile, extrusion force or pulling force is effectively counteracted, the limiting block and the retainer segments which are mutually inserted and sleeved can relatively move in the circumferential direction of the bearing retainer through clearance movable fit, and therefore the bearing retainer can be in a self-adaptive moving state when the bearing is operated. Compared with the integral bearing retainer with high cost and low rigidity and the sectional bearing retainer with lower wear resistance and poor anti-collision effect in the prior art, the bearing retainer provided by the invention can effectively resist tension and collision without influencing the running state of the bearing, and the connection and the disassembly of the retainer and the limiting block which are connected in a matched manner through the plug bush are very convenient, so that the cost is effectively reduced.
Preferably, the limiting block is made of nonmetal high polymer.
Preferably, the slot is arranged on the limiting block, and the slot openings corresponding to the two adjacent retainer sections of the limiting block are opposite; the isolation part is arranged between the two slots with the openings opposite to each other on the limiting block. The slots are formed in the two ends of the limiting block, the two adjacent retainer sections are conveniently installed in a sleeved mode, the isolating part can separate the two adjacent retainer sections, collision is prevented, connection is facilitated, and the structure is ingenious.
Preferably, the cross-sectional area of the limiting block is larger than that of the retainer segment. The sectional area of the limiting block is larger than that of the retainer section, so that the limiting block can circumferentially coat the retainer section, and the anti-collision and separation effects of the limiting block are better.
Preferably, the distance H between the hole wall of the pocket at the tail end of the retainer section close to the limiting block and the end face of the corresponding end of the retainer section is greater than the maximum depth H of the slot. Prevent that the bearing roller in the pocket from taking place the contact with the stopper.
Preferably, the end faces of the two sides of the retainer section are respectively provided with a friction reducing block, each friction reducing block is provided with a supporting face used for contacting with the inner ring raceway surface and the outer ring raceway surface of the bearing, and the height of the supporting face is greater than that of the limiting block which is higher than the end face of the retainer section. The friction reducing block prevents the axial side face of the limiting block from contacting with the inner ring or the outer ring of the bearing, and reduces the abrasion of the limiting block.
Preferably, the friction reducing blocks on the end surfaces of the two sides of each retainer section are arranged at least two positions along the circumferential direction. At least two friction reducing blocks on the end surfaces of two sides enable the retainer segment to be arranged between the inner ring and the outer ring of the bearing and then to be supported and balanced, so that the whole body is more stable.
Preferably, the friction reducing blocks on the two side end faces of the retainer segment are symmetrically arranged in the axial direction of the retainer segment. The friction reducing blocks symmetrically arranged in the axial direction of the retainer section enable the axial two end faces of the retainer section to be stressed the same, and stability of the retainer section after connection arrangement is improved.
Preferably, the friction reducing block is made of a copper alloy material. The copper alloy material has high wear resistance and long service life.
Preferably, an annular retainer groove is formed in the outer ring of the main bearing and used for assembling the bearing retainer, an outer arc boss protruding towards the radial outer side and an inner arc boss protruding towards the radial inner side are arranged on the bearing retainer, and two groove walls of the retainer groove are respectively in radial limit fit with the outer arc boss and the inner arc boss. The arrangement of the inner arc boss and the outer arc boss enables the limiting block to be spaced from the groove wall of the retainer groove in the radial direction, so that the abrasion of the limiting block is reduced, and the service life of the limiting block is prolonged.
Drawings
Fig. 1 is a first view angle exploded schematic view (not shown bearing rollers) of embodiment 1 of the main bearing of the shield machine provided by the invention;
FIG. 2 is a second perspective view of FIG. 1;
FIG. 3 is a cross-sectional view of the bearing cage of FIG. 1;
FIG. 4 is a front view of the bearing cage of FIG. 1 (friction reducing blocks not shown);
FIG. 5 is a partial schematic view of the bearing cage of FIG. 1; (inner and outer arc boss not shown)
FIG. 6 is a cross-sectional view of the cage segment of FIG. 4;
FIG. 7 is a schematic view of the retainer portion of the cage segment of FIG. 4;
FIG. 8 is a half sectional view of the stop block of FIG. 1;
FIG. 9 is a schematic structural view of the limiting block shown in FIG. 8;
description of reference numerals:
1. a bearing retainer; 2. a cage section; 3. a pocket hole; 4. a limiting block; 5. a slot; 6. an isolation portion; 7. a limiting portion; 8. an outer arc boss; 9. an inner arc boss; 10. an outer ring; 11. an inner ring; 12. a holder slot; 13. an inner ring raceway surface; 14. and (6) a friction reducing block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration only, not by way of limitation, i.e., the embodiments described are intended as a selection of the best mode contemplated for carrying out the invention, not as a full mode. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, which may be present, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrases "comprising an … …," or the like, do not exclude the presence of such elements, processes, or methods.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
The specific embodiment 1 of the main bearing of the shield machine provided by the invention comprises the following steps:
when in use, the main bearing of the shield machine is assembled in a shield body of the shield machine and is connected with the cutter head, and the main bearing of the shield machine can bear the load borne by the cutter head. As shown in fig. 1 and 2, the main bearing of the shield machine comprises an inner ring 11, an outer ring 10, bearing rollers (not shown in the figure) and a bearing retainer 1 for assembling and fixing the bearing rollers. The outer ring 10 of the main bearing of the shield machine is provided with a retainer groove 12 facing the inner ring 13, the bearing retainer 1 is assembled in the retainer groove 12, the inner cambered surface and the outer cambered surface of the bearing retainer 1 are respectively opposite to two groove walls of the retainer groove 12, the bearing retainer 1 is provided with a pocket hole 3, and the pocket hole 3 is used for installing a bearing roller. After the bearing rollers are installed in the pockets 3 of the bearing retainer 1, the bearing rollers can be in rolling engagement with the groove bottom surfaces of the retainer grooves 12, which are the outer ring raceway surfaces of the bearing, and the other sides of the bearing rollers can be in rolling engagement with the inner ring raceway surfaces 13 of the inner ring 11, as shown in fig. 2.
As shown in fig. 3 to 7, the bearing cage 1 is a segmented structure, and includes a plurality of circumferentially arranged cage segments 2, and each cage segment 2 is provided with a plurality of pockets 3 arranged at intervals. All link together through stopper 4 between each holder section 2, stopper 4 is made for flexible material, and two adjacent holder sections 2 cooperate with same stopper 4 plug bush along 1 circumference of bearing holder. The retainer segments 2 are connected by a limiting block 4 made of flexible material to form a closed-loop bearing retainer 1, so that the bearing retainer 1 is connected and assembled in the bearing. When the rotation speed of the cutter head of the shield tunneling machine is high in the tunneling process, the limiting block 4 can effectively offset the collision force between the retainer segments 2 according to the flexible deformation of the limiting block 4.
As shown in fig. 6, the cage segment 2 is a sector-ring-shaped block structure, the pockets 3 on each cage segment 2 are rectangular holes, a plurality of pockets 3 are provided on the cage segment 2, and the pockets 3 are uniformly arranged at intervals along the circumferential direction of the cage segment 2. As shown in fig. 7, the end surfaces of the two sides of the circumferential sector of each holder segment 2 form an insertion surface which is in insertion fit with the limiting block 4, and the outer end portion of the holder segment 2 where the insertion surface is located forms a limiting portion 7.
As shown in fig. 8 and 9, the stopper 4 is also a fan-shaped annular block structure, and the stopper 4 is made of a high molecular polymer, specifically, a high molecular polymer nylon material. The high polymer nylon material has good tensile flexibility, can effectively bear collision extrusion and tensile force between the retainer sections 2, and ensures the strength and stability of the bearing retainer 1 which is arranged in sections. Wherein, the stopper 4 all is equipped with slot 5 on the face of the back of the body both sides in the holder week, and the 5 openings of slot are arranged on the back of the body on same stopper 4, and slot 5 is used for pegging graft with spacing part 7 of holder section 2. The spacing part 7 of the retainer section 2 is in clearance fit with the slot 5, so that the spacing block 4 and the retainer section 2 which are mutually inserted can move relatively in the circumferential direction of the bearing retainer 1, the bearing retainer 1 has a movement allowance for collision movement after the retainer sections 2 are connected through the spacing block 4, and the spacing block 4 can effectively eliminate collision or stretching between the retainer sections 2. In this embodiment, the size and structure of each limiting block 4 are the same.
As shown in fig. 5, the two slots 5 of the two side notches of the limiting block 4 are not communicated with each other, an isolating part 6 for isolating the slots 5 is formed between the two slots 5 of the same limiting block 4, and the cross section of the limiting block 4 in the circumferential direction of the bearing retainer is of a symmetrical structure in the shape of an i. When two adjacent retainer sections 2 are inserted into the same limiting block 4, the isolating part 6 is positioned between the two adjacent retainer sections 2 to isolate the adjacent retainer sections 2, and the isolating part 6 prevents the limiting parts 7 of the two adjacent retainer sections 2 from colliding.
In this embodiment, the retainer segments 2 are all inserted into the slots 5 of the limiting block 4 through the limiting portions 7 at the two ends, so that the outer ends of the slot walls of the slots 5 at the two sides of the limiting block 4 all protrude out of the end portions of the retainer segments 2. As shown in fig. 3 and 4, each retainer segment 2 is provided with bosses arranged at intervals along the circumferential direction on the inner arc surface and the outer arc surface along the circumferential direction of the sector ring, wherein the outer arc boss 8 is provided on the outer arc surface of the retainer segment 2, and the inner arc boss 9 is provided on the inner arc surface of the retainer segment 2. The protruding height of the limiting block 4 at the two radial ends of the retainer segment 2 is lower than the radial height of the outer arc boss 8 and the inner arc boss 9, so that the limiting block 4 is prevented from contacting with the groove wall of the retainer groove 12, and when the bearing retainer 1 is installed in the retainer groove 12, the outer arc boss 8 and the inner arc boss 9 on the retainer segment 2 can be in radial limiting fit with the groove wall of the retainer groove 12. In other embodiments, the lug boss may also be in the form of an ear plate, the ear plate is disposed on the radial inner and outer arc surfaces of the holder section, and the outer side surface of the ear plate is in the shape of a circular arc.
As shown in fig. 5, the two side end faces of each cage segment 2 facing the inner ring 11 and the outer ring 10 are respectively provided with a friction reducing block 14, the friction reducing blocks 14 have a supporting surface for contacting with the inner and outer ring raceway surfaces of the bearing, and the height of the supporting surface is greater than the height of the limiting block 4 protruding out of the cage segment 2 and facing the end faces of the inner and outer rings. As shown in fig. 5, a plurality of friction reducing blocks 14 are circumferentially provided on both axial end faces of each cage segment 2, and the friction reducing blocks 14 on both axial end faces of each cage segment 2 are symmetrically arranged in the axial direction of the cage segment 2. In this embodiment, the friction reducing block 14 is made of a copper alloy material, and has a high wear resistance and a long service life.
In this embodiment, through the limiting protection of the friction reducing block 14 at the inner side and the outer side of the limiting block 4 and the limiting protection of the inner arc boss and the outer arc boss at the radial two ends of the limiting block 4, after the limiting block 4 connects the retainer segments 2 into the closed-loop bearing retainer 1, the outer end faces of the limiting block 4 are not in contact with the inner ring and the outer ring of the bearing, so that the limiting block 4 is effectively protected, and the service life of the bearing is prolonged.
As shown in fig. 6 and 8, the distance H between the wall of the pocket 3 at the extreme end of the cage segment 2 close to the stopper 4 and the insertion surface of the cage segment 2 is greater than the maximum depth H of the slot 5, so as to prevent the bearing roller in the pocket 3 from contacting the stopper 4. The bottom surface of the slot 5 of the limiting block 4 can contact and attach with the insertion surface of the retainer section 2. After the retainer segment 2 is inserted into the slots 5 on both sides of the limiting block 4 through the limiting part, the formed bearing retainer 1 has the same interval between the pockets 3.
The bearing retainer 1 of the shield tunneling machine is restrained into a whole by the limiting block 4, the retainer sections 2 are flexibly inserted by the limiting block 4, direct contact between the retainer sections is avoided, severe collision between the retainer sections is effectively reduced, the limiting part 7 on the retainer section 2 is in clearance movable fit with the slot 5, the limiting block 4 and the retainer section 2 which are mutually inserted can move relatively in the circumferential direction of the bearing retainer 1, and the whole wear resistance and rigidity of the bearing retainer 1 are improved through the clearance movable fit between the limiting part 7 and the slot 5 and the flexible protection provided by the limiting block 4. Compared with the integral bearing retainer 1 with high cost and low rigidity and the sectional bearing retainer 1 with lower wear resistance and poor anti-collision effect in the prior art, the bearing retainer 1 provided by the invention has the advantages that the use of the bearing is not influenced, meanwhile, the tensile anti-collision and the abrasion are effectively prevented, the bearing retainer 1 formed by the bearing retainer is convenient to connect and disassemble, and the cost is effectively reduced.
The specific embodiment 2 of the main bearing of the shield machine provided by the invention comprises the following steps:
the difference from embodiment 1 is that in embodiment 1, a slot 5 is provided on the limiting block 4, and the two circumferential ends of the holder segment 2 are limiting parts 7 for inserting into the slot 5. In this embodiment, the slot is established at the axial both ends of holder section, and the stopper is the block structure that both ends are the grafting end, and the stopper can insert the slot on the holder section and carry out the plug bush with two adjacent holder sections and connect. In other embodiments, the two ends of the limiting block, which are opposite to each other, can be provided with slots at one end, the other end is provided with an entity structure, one end of the same retainer section is provided with a slot, and the other end is provided with a limiting part for plugging, so that the continuous mutually-plugging structure that the limiting block is inserted into one end of the retainer section, the other end of the retainer section is inserted into the other limiting block, and the other limiting block is inserted into the next retainer section is realized.
The specific embodiment 3 of the main bearing of the shield machine provided by the invention comprises the following steps:
the difference from embodiment 1 is that in embodiment 1, the stopper 4 is made of a flexible material. In this embodiment, the stopper is made of elastic material.
The specific embodiment 4 of the main bearing of the shield machine provided by the invention is as follows:
the difference from embodiment 1 is that in embodiment 1, the stopper 4 is made of a nylon material of a non-metal high polymer. In this embodiment, the limiting block is made of a polyetheretherketone high polymer.
The specific embodiment 5 of the main bearing of the shield machine provided by the invention comprises the following steps:
the difference from embodiment 1 is that in embodiment 1, the sectional area of the stopper 4 is larger than that of the holder segment 2. In this embodiment, the cross-sectional area of the limiting block is equal to the cross-sectional area of the retainer segment. In other embodiments, the cross-sectional area of the limiting block may also be smaller than the cross-sectional area of the retainer segments, but it is necessary to ensure that two adjacent retainer segments do not collide and interfere after the limiting block is disposed.
The specific embodiment 6 of the main bearing of the shield machine provided by the invention is as follows:
the difference from embodiment 1 is that in embodiment 1, the friction reducing blocks 14 are provided on both side end surfaces of the retainer segment 2, and the friction reducing blocks 14 are symmetrically arranged on both side end surfaces of the retainer segment 2. In this embodiment, in order to increase the anti-friction and anti-seismic effects, the number and positions of the anti-friction blocks on the end surfaces of both sides of the retainer segment are increased and changed, for example, a plurality of anti-friction blocks are arranged on the retainer segment between the pockets. In other embodiments, the friction reducing blocks on the end surfaces of the two sides of the retainer segment can also be arranged asymmetrically.
The specific embodiment 7 of the main bearing of the shield machine provided by the invention comprises the following steps:
the difference from embodiment 1 is that in embodiment 1, the friction reducing block 14 is made of a copper alloy material. In this embodiment, the friction reducing block is made of a stainless steel metal material. In other embodiments, the friction reducing block may be made of a flexible or elastic material.
The specific embodiment of the bearing retainer provided by the invention comprises the following steps:
the bearing retainer has the same structure as the bearing retainer 1 in each main bearing of the shield machine and comprises a plurality of retainer sections which are circumferentially arranged, pockets for mounting bearing rollers are arranged on the retainer sections, adjacent retainers are connected through a limiting block insert sleeve, and the limiting block is made of flexible materials or elastic materials; all be equipped with the boss on the extrados and the intrados of holder section, all be equipped with the antifriction piece on the side of holder section orientation inner circle and outer lane, concrete structure is no longer described here.
In other embodiments of the main bearing and the bearing retainer of the shield machine, the friction reducing blocks and/or the bosses can be omitted.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments without inventive effort, or some technical features of the present invention may be substituted with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a bearing retainer, including a plurality of holder sections (2) that circumference was arranged, be provided with pocket hole (3) that are used for installing the bearing roller on holder section (2), a serial communication port, be provided with stopper (4) between adjacent holder section (2), stopper (4) and stopper (4) adjacent holder section (2) along bearing holder (1) circumference plug bush cooperation, wherein be provided with slot (5) on one in stopper (4) and the holder section (2) of mutual plug bush cooperation, be provided with on the other and be used for inserting spacing part (7) in slot (5) along bearing holder (1) circumference, spacing part (7) and slot (5) clearance fit, so that stopper (4) and holder section (2) of mutual plug bush can be relative activity in the circumference of bearing holder (1), stopper (4) have be in between adjacent holder section (2) with the interval that separates adjacent holder section (2) A detachment portion (6); the limiting block (4) is made of flexible materials or elastic materials.
2. The bearing cage according to claim 1, characterized in that the stopper (4) is made of a non-metallic high polymer.
3. The bearing retainer according to claim 1, wherein the slots (5) are arranged on the limiting blocks (4), and the openings of the slots (5) corresponding to the two retainer sections (2) adjacent to the limiting blocks (4) are opposite; the isolation part (6) is positioned between the two slots (5) with the openings back to back on the limiting block (4).
4. Bearing cage according to claim 3, characterized in that the distance H between the wall of the pocket (3) at the very end of the cage section (2) close to the stop block (4) and the end face of the corresponding end of the cage section (2) is greater than the maximum depth H of the slot (5).
5. Bearing cage according to any of claims 1 to 4, characterized in that the cage segments (2) are provided on both side end faces with friction reducing blocks (14), the friction reducing blocks (14) having bearing surfaces for surface contact with the inner and outer race tracks of the bearing, the height of the bearing surfaces being greater than the height of the stop blocks (4) above the end faces of the cage segments (2).
6. Bearing cage according to claim 5, characterized in that the friction-reducing blocks (14) on both side end faces of each cage segment (2) are arranged at least two places in the circumferential direction.
7. Bearing cage according to claim 6, characterized in that the friction-reducing blocks (14) on both side end faces of the cage segments (2) are arranged symmetrically in the axial direction of the cage segments (2).
8. Bearing cage according to claim 5, characterized in that the friction reducing blocks (14) are made of a copper alloy material.
9. A shield machine main bearing, comprising an inner ring (11), an outer ring (10), a bearing roller and a bearing retainer for assembling and fixing with the bearing roller, characterized in that the bearing retainer is the bearing retainer (1) of any one of the above claims 1-8.
10. The main bearing of the shield machine according to claim 9, characterized in that an annular retainer groove (12) is formed in an outer ring (10) of the main bearing of the shield machine, the retainer groove (12) is used for assembling the bearing retainer (1), an outer arc boss (8) protruding radially outward is formed on the bearing retainer (1), an inner arc boss (9) protruding radially inward is further formed, and two groove walls of the retainer groove (12) are respectively in radial limit fit with the outer arc boss (8) and the inner arc boss (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210239538.2A CN114562517B (en) | 2022-03-11 | 2022-03-11 | Bearing retainer and main bearing of shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210239538.2A CN114562517B (en) | 2022-03-11 | 2022-03-11 | Bearing retainer and main bearing of shield tunneling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114562517A true CN114562517A (en) | 2022-05-31 |
| CN114562517B CN114562517B (en) | 2024-03-26 |
Family
ID=81717989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210239538.2A Active CN114562517B (en) | 2022-03-11 | 2022-03-11 | Bearing retainer and main bearing of shield tunneling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114562517B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1115668A (en) * | 1965-07-01 | 1968-05-29 | Duerkoppwerke | A roller bearing cage |
| US5044787A (en) * | 1987-11-27 | 1991-09-03 | Fag Kugelfischer Georg Schafer (Kgaa) | Slit cage, particularly for needle bearings |
| US20080260317A1 (en) * | 2007-04-23 | 2008-10-23 | Cooper Roller Bearings Company Limited | Cage for a roller bearing and a roller bearing |
| JP2009162300A (en) * | 2008-01-07 | 2009-07-23 | Jtekt Corp | Thrust bearing |
| CN201606411U (en) * | 2010-03-04 | 2010-10-13 | 洛阳Lyc轴承有限公司 | Three-row cylinder roller bearing axial composite cage |
| CN201963737U (en) * | 2010-12-29 | 2011-09-07 | 上海联合滚动轴承有限公司 | Retaining frame on large-sized wind power double-line tapered roller bearing |
| CN102356247A (en) * | 2009-03-07 | 2012-02-15 | 维尔纳·博伊勒因 | Roller bearing comprising segmented cage |
| CN102549284A (en) * | 2010-09-14 | 2012-07-04 | 日本精工株式会社 | Single-joint cage |
| CN103032470A (en) * | 2011-08-01 | 2013-04-10 | Skf公司 | Split bearing cage for rolling element bearing |
| CN103270325A (en) * | 2010-12-23 | 2013-08-28 | 谢夫勒科技股份两合公司 | Rolling bearing cage and rolling bearing |
| DE102013214245A1 (en) * | 2013-07-22 | 2015-01-22 | Schaeffler Technologies Gmbh & Co. Kg | Divided rolling element cage |
| WO2015014355A1 (en) * | 2013-08-02 | 2015-02-05 | Schaeffler Technologies Gmbh & Co. Kg | Split rolling body cage made from plastic |
| CN207080507U (en) * | 2017-08-22 | 2018-03-09 | 许明贤 | A kind of shield machine retainer |
| US20200256391A1 (en) * | 2019-02-07 | 2020-08-13 | Aktiebolaget Skf | Bearing cage segment including welding-material bodies or locations |
| CN113339411A (en) * | 2021-06-09 | 2021-09-03 | 中国铁建重工集团股份有限公司 | Main bearing of heading machine and axial retainer and radial retainer thereof |
-
2022
- 2022-03-11 CN CN202210239538.2A patent/CN114562517B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1115668A (en) * | 1965-07-01 | 1968-05-29 | Duerkoppwerke | A roller bearing cage |
| US5044787A (en) * | 1987-11-27 | 1991-09-03 | Fag Kugelfischer Georg Schafer (Kgaa) | Slit cage, particularly for needle bearings |
| US20080260317A1 (en) * | 2007-04-23 | 2008-10-23 | Cooper Roller Bearings Company Limited | Cage for a roller bearing and a roller bearing |
| JP2009162300A (en) * | 2008-01-07 | 2009-07-23 | Jtekt Corp | Thrust bearing |
| CN102356247A (en) * | 2009-03-07 | 2012-02-15 | 维尔纳·博伊勒因 | Roller bearing comprising segmented cage |
| CN201606411U (en) * | 2010-03-04 | 2010-10-13 | 洛阳Lyc轴承有限公司 | Three-row cylinder roller bearing axial composite cage |
| CN102549284A (en) * | 2010-09-14 | 2012-07-04 | 日本精工株式会社 | Single-joint cage |
| CN103270325A (en) * | 2010-12-23 | 2013-08-28 | 谢夫勒科技股份两合公司 | Rolling bearing cage and rolling bearing |
| CN201963737U (en) * | 2010-12-29 | 2011-09-07 | 上海联合滚动轴承有限公司 | Retaining frame on large-sized wind power double-line tapered roller bearing |
| CN103032470A (en) * | 2011-08-01 | 2013-04-10 | Skf公司 | Split bearing cage for rolling element bearing |
| DE102013214245A1 (en) * | 2013-07-22 | 2015-01-22 | Schaeffler Technologies Gmbh & Co. Kg | Divided rolling element cage |
| WO2015014355A1 (en) * | 2013-08-02 | 2015-02-05 | Schaeffler Technologies Gmbh & Co. Kg | Split rolling body cage made from plastic |
| CN207080507U (en) * | 2017-08-22 | 2018-03-09 | 许明贤 | A kind of shield machine retainer |
| US20200256391A1 (en) * | 2019-02-07 | 2020-08-13 | Aktiebolaget Skf | Bearing cage segment including welding-material bodies or locations |
| CN113339411A (en) * | 2021-06-09 | 2021-09-03 | 中国铁建重工集团股份有限公司 | Main bearing of heading machine and axial retainer and radial retainer thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114562517B (en) | 2024-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113339411B (en) | Main bearing of heading machine, axial retainer and radial retainer thereof | |
| CN111749981B (en) | Shield constructs owner bearing and outer lane thereof | |
| CN109899387B (en) | Three-row cylindrical roller variable pitch bearing of roller guide retainer | |
| CN212744701U (en) | Split type super large diameter sliding bearing | |
| CN103140689A (en) | Rolling bearing | |
| CN108425950B (en) | Cage segment, segmented cage and bearing | |
| CN114562517A (en) | Bearing retainer and shield constructs owner bearing | |
| CN202811830U (en) | Spherical roller bearing | |
| CN114412918B (en) | Main bearing of heading machine and assembly method thereof | |
| CN114483776B (en) | Main bearing of heading machine and assembly method thereof | |
| CN114135588B (en) | Main bearing assembling method and assembling tool for heading machine | |
| CN216951306U (en) | Cylindrical roller bearing retainer | |
| CN214617523U (en) | Symmetrical rolling ball bearing retainer | |
| CN112460142A (en) | Self-aligning roller bearing for vibration machinery | |
| US8465209B2 (en) | Cage for radial roller bearings with limited width availability | |
| CN216279015U (en) | High-strength wear-resistant main bearing retainer of heading machine | |
| CN114483770B (en) | Main bearing of heading machine | |
| CN220890777U (en) | Self-aligning cylindrical roller bearing | |
| JP2007255109A (en) | Rotating shaft support structure for tunnel excavator | |
| CN214146262U (en) | Shaft coupling bearing | |
| CN215567341U (en) | Self-aligning roller bearing retainer and bearing thereof | |
| CN220600254U (en) | Integral cage of oblique pocket of cylindrical roller bearing | |
| CN215110094U (en) | Bearing retainer | |
| CN218377315U (en) | Tapered roller bearing with outer ring | |
| CN114198399A (en) | Cage segment for a rolling bearing, in particular a large-diameter rolling bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |